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Registered Member #315
Joined: Mon Mar 13 2006, 06:44AM
Location:
Posts: 2
hi guys,
I'm a little confused maybe someone can help me out. It's about doing io over, say serial com port. The code I have works, but I am not satified. I tried both, synchronous mode - polling für completion and sort of overlapped io... I call it sort of, because what I did is set up a ReadFile() für some bytes and check the ovelapped status für pending in the same thread later in the code. IF(!) I understand correctly it should be possible to 'hook' a custom windows message (or is it even a standard message?) to the io process to get get a call to the windows message loop automatically? Without knowing that I have to check the overlapped result? That would make handling io in a state-machine easier for me.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
The point of overlapped I/O is that you don't have to poll: the system will signal an event when your I/O is done, or even execute a callback function of your choice.
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overlapped io under win32 confusion
